{"id":14812,"date":"2021-10-13T11:56:00","date_gmt":"2021-10-13T03:56:00","guid":{"rendered":"http:\/\/222.73.203.234:9999\/?p=14812"},"modified":"2021-11-03T14:43:46","modified_gmt":"2021-11-03T06:43:46","slug":"%e9%80%9a%e8%bf%87%e7%94%b5%e6%9c%ba%e9%a9%b1%e5%8a%a8%e5%99%a8%e8%be%93%e5%87%ba%e6%99%b6%e4%bd%93%e7%ae%a1%e7%9a%84%e5%af%84%e7%94%9f%e4%ba%8c%e6%9e%81%e7%ae%a1%e8%bf%9b%e8%a1%8c%e7%94%b5%e6%b5%81-2","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/tech-info\/column\/822","title":{"rendered":"\u901a\u8fc7\u7535\u673a\u9a71\u52a8\u5668\u8f93\u51fa\u6676\u4f53\u7ba1\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u8fdb\u884c\u7535\u6d41\u518d\u751f\u65f6\u7684\u529f\u8017"},"content":{"rendered":"

\u672c\u6587\u5c06\u8c08\u4e00\u8c08\u4f7f\u7528\u6709\u5237\u76f4\u6d41\u7535\u673a\u9a71\u52a8\u5668IC\u8fdb\u884cPWM\u9a71\u52a8\u65f6\uff0c\u901a\u8fc7\u8f93\u51faMOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u8fdb\u884c\u7535\u6d41\u518d\u751f\u65f6\u7684\u529f\u8017\u3002\u4e4b\u6240\u4ee5\u8ba8\u8bba\u8fd9\u4e2a\u8bdd\u9898\uff0c\u662f\u56e0\u4e3a\u518d\u751f\u65f6\u7684\u5b9e\u9645\u529f\u8017\u53ef\u80fd\u4f1a\u5927\u4e8e\u4f30\u7b97\u503c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u5f15\u53d1\u95ee\u9898\uff0c\u6240\u4ee5\u9700\u8981\u6ce8\u610f\u3002<\/p>\n

\u901a\u8fc7MOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u8fdb\u884c\u7535\u6d41\u518d\u751f\u65f6\uff0c\u529f\u8017\u662f\u5426\u4f1a\u5927\u4e8e\u8ba1\u7b97\u503c\uff1f<\/h2>\n

\u5f53\u901a\u8fc7\u8f93\u51faMOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u8fdb\u884c\u7535\u6d41\u518d\u751f\u65f6\uff0c\u5176\u529f\u8017\u5e94\u8be5\u662f\u5bc4\u751f\u4e8c\u6781\u7ba1\u7684\u6b63\u5411\u7535\u538b\u00d7\u7535\u673a\u7535\u6d41\u3002\u7136\u800c\u5b9e\u9645\u4e0a\uff0c\u6709\u65f6\u529f\u8017\u53ef\u80fd\u4f1a\u5927\u4e8e\u8fd9\u4e2a\u8ba1\u7b97\u503c\u3002
\n\u5176\u539f\u56e0\u662f\u5f53\u7535\u6d41\u6d41\u8fc7\u8f93\u51faMOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u4ece\u800c\u4ea7\u751f\u6b63\u5411\u7535\u538b\u65f6\uff0cMOSFET\u7ed3\u6784\u4e0a\u56fa\u6709\u7684\u5bc4\u751f\u6676\u4f53\u7ba1\u4f1a\u5de5\u4f5c\uff0c\u7535\u6d41\u4ece\u7535\u6e90\u6d41\u5411GND\u3002\u8fd9\u4e2a\u7535\u6d41\u5c0f\u5230\u4e0d\u8db3\u6d41\u8fc7\u4e8c\u6781\u7ba1\u7684\u7535\u6d41\u7684\u51e0\u5341\u5206\u4e4b\u4e00\uff0c\u4f46\u529f\u8017\u662f\u201c\u7535\u6e90\u7535\u538b\u00d7\u7535\u6e90\uff0dGND\u95f4\u7535\u6d41\u201d\uff0c\u662f\u7535\u6e90\u7535\u538b\u8f83\u9ad8\u65f6\u4e0d\u53ef\u5ffd\u89c6\u7684\u503c\u3002
\n\u4e0b\u9762\u5c06\u4ece\u9a71\u52a8\u5668\u8f93\u51faMOSFET\u7684\u72b6\u6001\u3001\u7535\u6d41\u7684\u6d41\u52a8\u4ee5\u53ca\u8f93\u51faMOSFET\u7684\u7ed3\u6784\u89d2\u5ea6\u6765\u89e3\u91ca\u8bf4\u660e\u8fd9\u79cd\u73b0\u8c61\u3002
\n\u9996\u5148\u6765\u770b\u7535\u6d41\u518d\u751f\u65f6\u8f93\u51faMOSFET\u7684\u72b6\u6001\u548c\u518d\u751f\u7535\u6d41\u7684\u6d41\u52a8\u60c5\u51b5\u3002\u4e0b\u9762\u662fH\u6865\u7535\u8def\uff0c\u4f46\u5176\u4e2d\u7701\u7565\u4e86\u4e0e\u5de5\u4f5c\u65e0\u5173\u7684MOSFET\u3002\uff08a\uff09\u662f\u7ed9\u7535\u673a\u4f9b\u7ed9\u7535\u6d41\u65f6\u7684\u7535\u8def\uff0c\uff08b\uff09\u548c\uff08c\uff09\u90fd\u662f\u7535\u6d41\u518d\u751f\u65f6\u7684\u7535\u8def\uff0c\u4f46\u7531\u4e8e\u6709\u4e24\u79cd\u7535\u8def\u72b6\u6001\uff0c\u6240\u4ee5\u5c06\uff08b\uff09\u547d\u540d\u4e3a\u201c\u7535\u6d41\u518d\u751f\u65f61\u201d\u3001\u5c06\uff08c\uff09\u547d\u540d\u4e3a\u201c\u7535\u6d41\u518d\u751f\u65f62\u201d\u3002
\n\"\"
\n\uff08b\uff09\u7535\u6d41\u518d\u751f\u65f61\u662f\u5728\u4f9b\u7ed9\u7535\u6d41\u65f6\u5c06\u5bfc\u901a\u7684Q1\u5173\u95ed\u3001\u800cQ4\u4fdd\u6301\u5bfc\u901a\u3002\u5728\u8fd9\u79cd\u72b6\u6001\u4e0b\uff0c\u7535\u6d41\u901a\u8fc7\u5173\u65ad\u72b6\u6001\u7684Q2\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u548c\u5bfc\u901a\u72b6\u6001\u7684Q4\u518d\u751f\u3002
\n\uff08c\uff09\u7535\u6d41\u518d\u751f\u65f62\u662f\u5728\u4f9b\u7ed9\u7535\u6d41\u65f6\u5c06\u5bfc\u901a\u7684Q1\u548cQ4\u5173\u65ad\uff0c\u6240\u6709MOSFET\u5904\u4e8e\u5173\u65ad\u72b6\u6001\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u7535\u6d41\u901a\u8fc7Q2\u548cQ4\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u518d\u751f\u3002
\n\u63a5\u4e0b\u6765\uff0c\u4e3a\u4e86\u8bf4\u660e\u5bfc\u81f4\u6d41\u8fc7\u9644\u52a0\u7535\u6d41\u7684\u5bc4\u751f\u6676\u4f53\u7ba1\uff0c\u7ed9\u51fa\u4e86\u7535\u673a\u9a71\u52a8\u5668IC\u7684\u8f93\u51faMOSFET\u7684\u7ed3\u6784\u793a\u610f\u56fe\uff08\u622a\u9762\u56fe\uff09\u3002\u5728\u4e0a\u9762\u7684\u7535\u8def\u56fe\u4e2d\uff0c\u9ad8\u8fb9\u4f7f\u7528\u4e86Pch MOSFET\uff0c\u4f4e\u8fb9\u4f7f\u7528\u4e86Nch MOSFET\uff0c\u6240\u4ee5\u4e0b\u56fe\u4e2d\u4e5f\u5206\u522b\u5217\u51fa\u4e86\u5b83\u4eec\u7684\u7ed3\u6784\u3002
\n\"\"
\n\u5728\u8f93\u51faNch MOSFET\u4e2d\uff0c\u7531\u6f0f\u6781D\u7684N\u578b\u6269\u6563\u5c42\u3001\u5143\u4ef6\u5206\u79bb\u7528\u7684P\u578b\u6269\u6563\u5c42\u548c\u8fde\u63a5\u5230\u7535\u6e90\u7684N\u578b\u6269\u6563\u5c42\uff08\u5728\u8fd9\u91cc\u662f\u8fde\u63a5\u5230\u8f93\u51faPch MOSFET\u7684\u6e90\u6781S\uff09\uff0c\u53ef\u4ee5\u5f62\u6210\u5bc4\u751fNPN\u6676\u4f53\u7ba1Qa\u3002
\n\u5f53\u518d\u751f\u7535\u6d41\u6d41\u8fc7\u8fd9\u4e2aNch MOSFET\u7684\u6e90\u6781\u548c\u6f0f\u6781\u4e4b\u95f4\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1Di_a\u65f6\uff0c\u7531\u4e8e\u5143\u4ef6\u5206\u79bbP\u578b\u6269\u6563\u5c42\u662f\u4e0eGND\u76f8\u8fde\u63a5\u7684\uff0c\u56e0\u6b64\u5bc4\u751fNPN\u6676\u4f53\u7ba1Qa\u7684\u57fa\u6781\u548c\u53d1\u5c04\u6781\u4e4b\u95f4\u7684\u4e8c\u6781\u7ba1\u4e5f\u4f1a\u4ea7\u751f\u6b63\u5411\u7535\u538b\u3002\u4e3a\u6b64\uff0c\u5bc4\u751fNPN\u6676\u4f53\u7ba1Qa\u5bfc\u901a\uff0c\u6d41\u8fc7\u96c6\u7535\u6781\u7535\u6d41\u5e76\u4ece\u7535\u6e90Ea\u6c72\u53d6\u7535\u6d41\u3002
\n\u5bf9\u4e8e\u8f93\u51faPch MOSFET\u6765\u8bf4\uff0c\u539f\u7406\u4e5f\u76f8\u540c\u3002\u53ef\u4ee5\u7531\u6f0f\u6781D\u7684P\u578b\u6269\u6563\u5c42\u3001\u4e0e\u6e90\u6781S\u5171\u7528\u7684\u80cc\u6805N\u578b\u6269\u6563\u5c42\u3001\u5143\u4ef6\u5206\u79bb\u7b49\u7684P\u578b\u6269\u6563\u5c42\u6765\u5f62\u6210\u5bc4\u751fPNP\u6676\u4f53\u7ba1Qb\u3002
\n\u5f53\u518d\u751f\u7535\u6d41\u6d41\u8fc7\u8be5Pch MOSFET\u7684\u6e90\u6781\u548c\u6f0f\u6781\u4e4b\u95f4\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1Di_b\u65f6\uff0c\u5bc4\u751fPNP\u6676\u4f53\u7ba1Qb\u5bfc\u901a\uff0c\u6d41\u8fc7\u96c6\u7535\u6781\u7535\u6d41\uff0c\u4e14\u7535\u6d41\u6d41\u5411GND\u3002
\n\u5f53\u518d\u751f\u7535\u6d41\u6d41\u8fc7\u8f93\u51faMOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u65f6\uff0c\u7535\u6d41\u901a\u8fc7\u5bc4\u751f\u6676\u4f53\u7ba1\u5728\u7535\u6e90\u548cGND\u4e4b\u95f4\u6d41\u52a8\u3002\u4e00\u822c\u6765\u8bb2\uff0c\u6d41\u8fc7\u7684\u7535\u6d41\u6bd4\u518d\u751f\u7535\u6d41\u5c0f\u4e24\u4e2a\u6570\u91cf\u7ea7\u5de6\u53f3\uff0c\u4f46\u4f1a\u56e0IC\u6240\u4f7f\u7528\u7684\u5de5\u827a\u548cMOSFET\u7684\u5e03\u5c40\u800c\u6709\u5f88\u5927\u5dee\u5f02\u3002\u56e0\u6b64\uff0c\u5f53\u901a\u8fc7\u8f93\u51faMOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u4f7f\u7528\u7535\u6d41\u518d\u751f\u65f6\uff0c\u9700\u8981\u786e\u8ba4\u901a\u8fc7\u8fd9\u4e9b\u5bc4\u751f\u6676\u4f53\u7ba1\u6d41\u8fc7\u7684\u7535\u6d41\u5927\u5c0f\u3002
\n\u4f8b\u5982\uff0c\u5728\u201c\uff08c\uff09\u7535\u6d41\u518d\u751f\u65f62\u201d\u4e2d\uff0c\u5047\u8bbe\u7535\u6e90\u7535\u538bEa=24V\uff0c\u518d\u751f\u7535\u6d41Io=1.0A\uff0cNch MOSFET\u5bc4\u751f\u4e8c\u6781\u7ba1\u7684\u6b63\u5411\u7535\u538bVF_N=0.8V\uff0cPch MOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u6b63\u5411\u7535\u538bVF_P=0.95V\uff0cNch MOSFET\u7684\u5bc4\u751f\u6676\u4f53\u7ba1\u548cPch MOSFET\u7684\u5bc4\u751f\u6676\u4f53\u7ba1\u7684\u7535\u6e90\u548cGND\u4e4b\u95f4\u6d41\u52a8\u7684\u7535\u6d41\u4e0e\u518d\u751f\u7535\u6d41\u4e4b\u6bd4\u90fd\u4e3ak1=1\/100\uff0c\u5219\u529f\u8017Pc\u5982\u4e0b\uff1a
\nPc\uff1dIo\u00d7\uff08VF_N\uff0bVF_P\uff0b2\u00d7k1\u00d7Ea\uff09 \uff1d1\u00d7\uff080.8\uff0b0.95\uff0b2\u00d71\/100\u00d724\uff09\uff1d1.75\uff0b0.48\uff1d2.23W
\n\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6d41\u7ecf\u5bc4\u751f\u6676\u4f53\u7ba1\u7684\u7535\u6d41\u5bf9\u529f\u8017\u7684\u5f71\u54cd\u662f\u7edd\u5bf9\u4e0d\u80fd\u5ffd\u89c6\u7684\u3002\u5728\u7535\u6e90\u7535\u538bEa\u9ad8\u65f6\u9700\u8981\u6ce8\u610f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u672c\u6587\u5c06\u8c08\u4e00\u8c08\u4f7f\u7528\u6709\u5237\u76f4\u6d41\u7535\u673a\u9a71\u52a8\u5668IC\u8fdb\u884cPWM\u9a71\u52a8\u65f6\uff0c\u901a\u8fc7\u8f93\u51faMOSFET\u7684\u5bc4\u751f\u4e8c\u6781\u7ba1\u8fdb\u884c\u7535\u6d41\u518d\u751f\u65f6\u7684\u529f\u8017\u3002\u4e4b\u6240\u4ee5\u8ba8\u8bba\u8fd9\u4e2a\u8bdd\u9898\uff0c\u662f\u56e0\u4e3a\u518d\u751f\u65f6\u7684\u5b9e\u9645\u529f\u8017\u53ef\u80fd\u4f1a\u5927\u4e8e\u4f30\u7b97\u503c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u4f1a\u5f15\u53d1\u95ee\u9898\uff0c\u6240\u4ee5\u9700\u8981\u6ce8\u610f\u3002 \u901a\u8fc7M […]","protected":false},"author":7,"featured_media":15986,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1481],"tags":[1221,1222,1223,1226,1248,1251,1256,1472,1473,1474,1475,1476,1477,1478,1560,1561],"class_list":["post-14812","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-motor-engineer","tag-1221","tag-1222","tag-1223","tag-1226","tag-1248","tag-1251","tag-1256","tag-h","tag-1473","tag-1474","tag-1475","tag-1476","tag-1477","tag-1478","tag-mosfet"],"acf":[],"wps_subtitle":"","_links":{"self":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/14812","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/comments?post=14812"}],"version-history":[{"count":1,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/14812\/revisions"}],"predecessor-version":[{"id":15987,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/posts\/14812\/revisions\/15987"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media\/15986"}],"wp:attachment":[{"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/media?parent=14812"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/categories?post=14812"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/techclass.wfjydl.com\/wp-json\/wp\/v2\/tags?post=14812"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}